MARGARET NGUYEN M.D.
NPI 1821318957
Pediatrics - Neonatal-Perinatal Medicine in Houston, TX
About Margaret Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET NGUYEN M.D. (NPI 1821318957) is an individual neonatal-perinatal medicine provider in Houston, Texas, licensed in Pennsylvania (MD447954) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Margaret Nguyen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Margaret Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 323 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Margaret Nguyen's NPI number?
The NPI number for Margaret Nguyen is 1821318957. It was assigned to this individual provider in the NPPES registry on June 11, 2010.
Where is Margaret Nguyen located?
Margaret Nguyen practices at 6431 Fannin St Ste 310, Houston, TX 77030. The listed phone number is (713) 500-5151.
What is Margaret Nguyen's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.
Is Margaret Nguyen enrolled in Medicare?
Yes. Margaret Nguyen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Margaret Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Nguyen reassigns Medicare benefits to Uc Regents (Los Angeles, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaret Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Margaret Nguyen was last updated on April 3, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Margaret Nguyen, M.D. · NPI 1821318957
Neonatal-Perinatal Medicine physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since June 11, 2010.
## Identity
- **NPI:** 1821318957 (Entity type: Individual)
- **Enumerated:** June 11, 2010
- **Primary specialty:** Pediatrics - Neonatal-Perinatal Medicine · taxonomy 2080N0001X
- **State license:** MD447954 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 6431 FANNIN ST STE 310, Houston, TX 77030-1501
- **Phone:** (713) 500-5151
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Uc Regents (NPI 1982667663, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 3, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1821318957) · Data from the CMS NPPES public registry.